(a) If the entropy of transition of a pure substance A, (A), at constant p is constant, show that the corresponding enthalpy change, (A), is also constant (b) If the phase transition of a pure...

(a) If the entropy of transition of a pure substance A,

(A), at constant p is constant, show that the corresponding enthalpy change,

(A), is also constant

(b) If the phase transition of a pure substance is a function of T and p and the value of
(A) is independent of the change in conditions, show that the value of
(A) is no longer constant, as was the case for the constraint of constant p. (Hint: Use the Maxwell relationships.)